Lets split some hairs.
Dye Sublimation process vaporises the dye (not ink) which then sublimates (gets absorbed) into the print media. But the Micro Dry thermal transfer printing process heats up ink (not dye). That liquifies the ink and deposits it on top of the print media. The ink actually sits on top of the print media. That ink can even be scratches off with a fingernail.
Certain Alps models are capable of both DyeSub and Micro Dry printing (using different ink cartridges and different print media) but there is a big difference between each printing method. Only think in common that both methods use heat for printing.
Only Micro Dry thermal transfer printing is usable for decals. That method allows to place multiple layers of inks on to of each other. That is what enables Alps to print white undercoat layer under standard color inks. DyeSyb printing does not allow for that and can only be printed on the special DyeSub media (not on decal paper).